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Telescopic slewing submarine cable back torsion frame

A technology of back-twist frame and submarine cable, which is applied in the field of back-twist frame, and can solve problems such as forced tension of submarine cable, breaking of sea cable, pulling backward torsion frame, etc.

Active Publication Date: 2022-03-15
SHANGHAI FOUND ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the diameter of submarine cables generally exceeds 200mm, and the voltage level reaches 220kV or above. More and more attention has been paid to the back-twisting problem during construction operations. The submarine cable of the cable laying ship is fixed in the cable storage pool, so the horizontal rotation untwisting device is widely used in large-diameter, high-voltage submarine cables
However, the horizontal rotation of receiving and releasing the cable depends on the active operation of the cable tray. In some special emergency conditions, such as high sea conditions, it is necessary to consider the mandatory locking of the submarine cable turntable. If the speed cannot keep up with the speed of walking the anchor, the submarine cable will be forced to be pulled at this time, and there will be a danger of breaking the submarine cable or pulling back and twisting the frame

Method used

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  • Telescopic slewing submarine cable back torsion frame
  • Telescopic slewing submarine cable back torsion frame
  • Telescopic slewing submarine cable back torsion frame

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] Such as figure 1 , as shown in 2, a telescopic rotary submarine cable back torsion frame, including back torsion frame fixed column 1, slewing mechanism 2, counterweight 3, T-arm fixed part 4, hydraulic cylinder 5, T-arm movable arm 6, Cable chute 7, cable turntable 8.

[0020] The upper end of the fixed column 1 of the twist frame is connected to the T-arm fixed part 4 through the rotary mechanism 2, one end of the T-arm fixed part 4 is connected to the counterweight 3, and the other end is slidingly fitted to connect the T-arm movable arm 6, and the T-arm movable arm 6 It is connected with the hydraulic cylinder 5 installed in the T-arm fixed part 4, and the T-arm movable arm 6 is driven by the hydraulic cylinder 5 to stretch back and forth, and the T-arm fixed part 4 is also fixedly connected with the T-arm fixed arm. The movable arm 6 and t...

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PUM

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Abstract

The invention relates to a telescopic rotary submarine cable untwist frame, which includes a fixed column of the torsion frame, a slewing mechanism, a counterweight, and a cable turntable. One end of the fixed part is connected to the counterweight, and the other end is slidingly fitted to connect the movable arm of the T-arm, and the movable arm of the T-arm is connected with the hydraulic cylinder installed in the fixed part of the T-arm, and the movable arm of the T-arm is driven by the hydraulic cylinder. telescopic, the fixed part of the T-arm is also fixedly connected with a T-arm fixed arm, and the movable arm of the T-arm and the fixed arm of the T-arm are provided with a cable chute. The invention is used for horizontal rotation and back-twisting under normal conditions, and can be converted to central pull-up and back-twisting through rotation and telescopic conversion in emergency situations, which can avoid damage to cables or back-twist frames.

Description

technical field [0001] The invention relates to an untwist frame for laying submarine cables, in particular to a retractable revolving submarine cable untwist frame. Background technique [0002] At present, the diameter of submarine cables generally exceeds 200mm, and the voltage level reaches 220kV or above. More and more attention has been paid to the back-twisting problem during construction operations. The submarine cable of the cable laying ship is fixed in the cable storage pool, so the horizontal rotation untwisting device is widely used for large-diameter, high-voltage submarine cables. However, the horizontal rotation of receiving and unwinding the cable depends on the active operation of the cable tray. In some special emergency conditions, such as high sea conditions, it is necessary to consider the mandatory locking of the submarine cable turntable. If the speed cannot keep up with the speed of walking the anchor, the submarine cable will be forced to be pulled...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G9/02
CPCH02G9/02
Inventor 缪一星沈光李昊
Owner SHANGHAI FOUND ENG GRP